Need help with fan placement !!

[Lappensaurus]

Hello guys, im here because i need help with my fan configuration.

I am using the iTek cosmic 19 (full acrylic window) as my case wich came with 3 front fans preinstalled.

i also have an coolermaster seidon 120 mm Aio cooler to cool my cpu (X5460)

As a gpu i have the Gtx 680 Amp from Zotac with a custom Backplate.

I have to cpu cooler mounted to succ in air from inside the case and blow it out of the top.

i can mount 2 more 120 mm fans, one on the back of the case, and one left from the cpu cooler.

How shold i mount those ? Blowing air in thew Case? Blowing Air out? I dont know if my Ram and other stuff is getting enogh Airflow.

Attaced is a picture of my Case in the current state and one of the fans i will be using.

 

I hope you guys can help me.

Sorry for my bad english, greetings from Germany

 

[redbullvodka]

I would definitely place a fan in the back so it´s blowing air out of the case, and just ignore the last fan placement

[wonderforest]

You look like you have 3 intake in the front, so i would put them in exhaust mode.